Webstore, Using both the Group and Concurrent license for Matlab

I'm using Matlab and would like to switch back and forth between a group license and a concurrent license. Is that possible?

You can have a single install that uses the two different licenses.  You simply activate the one and then open MATLAB, go to Activate Matlab in the program group - Choose to activate manually and use the license file and key from the Matlab offer on the WebStore that you have not already activated - Activate Software to activate the second.  It will use the Group license by default and, if you try to use a product for which you don't have a group license, it will try the concurrent license.